/* roulang page: index */
:root{
  --brand:#17795f;
  --brand-600:#0f604a;
  --brand-700:#0b4b3a;
  --brand-100:#e5f4ee;
  --ink:#102328;
  --ink-2:#3d565e;
  --muted:#6d8790;
  --bg:#f5f8f6;
  --surface:#ffffff;
  --line:#e2ebe7;
  --accent:#b8862f;
  --accent-soft:#fbf3e1;
  --radius-lg:18px;
  --radius:14px;
  --radius-sm:9px;
  --shadow-xs:0 1px 2px rgba(16,35,40,.05);
  --shadow-sm:0 8px 22px -14px rgba(16,35,40,.35);
  --shadow-md:0 22px 48px -28px rgba(16,35,40,.5);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 28px -22px rgba(16,35,40,.6);background:rgba(255,255,255,.98)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(150deg,var(--brand) 0%,var(--brand-700) 100%);
  color:#fff;font-weight:700;font-size:17px;letter-spacing:0;
  box-shadow:0 8px 18px -12px rgba(15,96,74,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.4px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:5px;
  padding:9px 13px;border-radius:var(--radius-sm);
  font-size:14.5px;font-weight:500;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-item{position:relative}
.caret{width:9px;height:9px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.6}
.dropdown{
  position:absolute;top:calc(100% + 8px);left:0;min-width:196px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-md);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{
  display:block;padding:8px 11px;border-radius:var(--radius-sm);
  font-size:13.5px;color:var(--ink-2);transition:background .18s ease,color .18s ease;
}
.dropdown a:hover{background:var(--brand-100);color:var(--brand-700)}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:focus-visible,.btn:focus-visible,.nav-link:focus-visible,a:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:11px 20px;border-radius:10px;border:1px solid transparent;
  font-size:14.5px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -16px rgba(15,96,74,.95)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 16px 26px -16px rgba(15,96,74,.9)}
.btn-primary:active{transform:translateY(0);background:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:rgba(23,121,95,.35)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.14);color:#f2fbf7;border-color:rgba(255,255,255,.32)}
.btn-light:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:54px 0 64px;
  background:#0b2226 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#eaf5f1;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(7,25,28,.93) 0%,rgba(9,36,37,.86) 46%,rgba(11,45,40,.74) 100%);
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:26px;align-items:start}
.hero-main{
  border-radius:var(--radius-lg);padding:34px 34px 30px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.17);
  backdrop-filter:blur(6px);
  box-shadow:0 30px 60px -40px rgba(0,0,0,.8);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;letter-spacing:1px;color:#cfeae1;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:#5fd8b4;display:inline-block}
.hero h1{
  margin:16px 0 14px;font-size:40px;line-height:1.28;font-weight:800;letter-spacing:.4px;
  color:#ffffff;
}
.hero h1 span{color:#7fe0c0}
.hero-lead{font-size:15px;line-height:1.85;color:#c6dcd6;max-width:640px}
.hero-pills{display:flex;flex-wrap:wrap;gap:9px;margin:22px 0 24px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;font-size:13px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#d9efe8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:26px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16)}
.hero-facts div{min-width:96px}
.hero-facts strong{display:block;font-size:22px;font-weight:800;color:#8ee6c6;line-height:1.3}
.hero-facts span{font-size:12.5px;color:#a9c7c0}
.hero-side{display:flex;flex-direction:column;gap:18px}
.side-card{border-radius:var(--radius);padding:22px;transition:transform .22s ease,box-shadow .22s ease}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-a{background:#ffffff;color:var(--ink);box-shadow:var(--shadow-md);transform:translateY(-14px)}
.side-a h3{color:var(--ink)}
.side-b{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);color:#e6f3ee}
.side-b h3{color:#ffffff}
.snap{display:flex;flex-direction:column;gap:11px}
.snap li{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13.5px;color:var(--ink-2)}
.snap li b{font-weight:700;color:var(--ink)}
.dot{width:7px;height:7px;border-radius:50%;display:inline-block;margin-right:6px}
.dot-ok{background:#2aa87f}
.dot-warn{background:#d9a33a}
.side-b .snap li{color:#cfe5de}
.side-b .snap li b{color:#ffffff}
.side-card .mini-note{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.7}
.side-b .mini-note{color:#a8c8c0}

/* ============ sections ============ */
.section{padding:64px 0}
.section-tight{padding:52px 0}
.section-alt{background:#eef4f0}
.section-white{background:var(--surface)}
.section-dark{background:#0e2a2b;color:#dceee8}
.section-head{max-width:760px;margin-bottom:34px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:1.6px;color:var(--brand);
  text-transform:uppercase;margin-bottom:10px;
}
.section-tag::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.section-dark .section-tag{color:#7fe0c0}
.section-dark .section-tag::before{background:#7fe0c0}
.section-head h2{font-size:29px;line-height:1.36;font-weight:800;letter-spacing:.3px;color:var(--ink)}
.section-dark .section-head h2{color:#ffffff}
.section-head p{margin-top:12px;font-size:14.8px;line-height:1.85;color:var(--ink-2)}
.section-dark .section-head p{color:#b8d3cb}

/* ============ cards & grids ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-xs);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#cfe2da}
.card h3{font-size:16.5px;font-weight:700;margin-bottom:9px;color:var(--ink)}
.card p{font-size:14px;line-height:1.78;color:var(--ink-2)}
.icon-box{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-700);margin-bottom:14px;
}
.icon-box svg{width:21px;height:21px}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--brand-100);color:var(--brand-700);
}
.tag-amber{background:var(--accent-soft);color:#8a6417}
.card-foot{display:flex;align-items:center;gap:8px;margin-top:16px;flex-wrap:wrap}

/* ============ stats ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
}
.stat-cell{background:var(--surface);padding:26px 22px;transition:background .2s ease}
.stat-cell:hover{background:#f8fbf9}
.stat-cell strong{display:block;font-size:30px;font-weight:800;color:var(--brand-700);line-height:1.2;letter-spacing:.5px}
.stat-cell strong em{font-style:normal;font-size:15px;font-weight:700;margin-left:2px}
.stat-cell span{display:block;margin-top:6px;font-size:13px;color:var(--muted)}

/* ============ scene ============ */
.scene-card{position:relative;overflow:hidden}
.scene-card .scene-index{
  font-size:12px;font-weight:800;letter-spacing:2px;color:#a9c3ba;
  display:block;margin-bottom:10px;
}
.scene-card:hover .scene-index{color:var(--brand)}
.scene-meta{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.scene-meta span{font-size:12px;padding:3px 9px;border-radius:6px;background:#f2f7f4;color:var(--ink-2);border:1px solid var(--line)}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;position:relative;transition:transform .22s ease,box-shadow .22s ease}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.step-num{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:14px;margin-bottom:14px;
}
.step h3{font-size:15.5px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--ink-2);line-height:1.75}

/* ============ showcase ============ */
.showcase{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
.showcase-figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--line)}
.showcase-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.showcase-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  background:linear-gradient(to top,rgba(6,24,26,.82),rgba(6,24,26,0));
  color:#e9f5f0;font-size:13px;
}
.check-list{display:flex;flex-direction:column;gap:13px;margin-top:20px}
.check-list li{display:flex;gap:11px;font-size:14.2px;color:var(--ink-2);line-height:1.75}
.check-list li svg{flex:0 0 auto;width:19px;height:19px;margin-top:3px;color:var(--brand)}

/* ============ compare ============ */
.compare{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-xs)}
.compare-row{display:grid;grid-template-columns:.8fr 1.1fr 1.1fr;border-bottom:1px solid var(--line)}
.compare-row:last-child{border-bottom:0}
.compare-row > div{padding:16px 20px;font-size:14px;line-height:1.7}
.compare-head > div{
  font-weight:700;font-size:13.5px;letter-spacing:.4px;color:var(--ink);
  background:#f3f8f5;
}
.compare-head .col-good{color:var(--brand-700);background:#e7f4ee}
.compare-row .dim{color:var(--muted)}
.compare-row .good{color:var(--ink);font-weight:500}
.compare-row .row-key{font-weight:600;color:var(--ink);background:#fafcfb}

/* ============ timeline ============ */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.timeline::before{
  content:"";position:absolute;left:8px;right:8px;top:19px;height:2px;
  background:linear-gradient(90deg,var(--brand),#b9dccf);border-radius:2px;
}
.tl-item{position:relative;padding-top:48px}
.tl-dot{
  position:absolute;top:11px;left:0;width:16px;height:16px;border-radius:50%;
  background:var(--surface);border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(23,121,95,.1);
}
.tl-item h3{font-size:15px;font-weight:700;margin-bottom:6px}
.tl-item p{font-size:13.5px;color:var(--ink-2);line-height:1.75}
.tl-item time{display:block;font-size:12px;color:var(--muted);letter-spacing:1px;margin-bottom:6px}

/* ============ quotes ============ */
.quote{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;display:flex;flex-direction:column;gap:12px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#cfe2da}
.quote p{font-size:14px;line-height:1.8;color:var(--ink-2)}
.quote-user{display:flex;align-items:center;gap:10px;margin-top:auto}
.avatar{
  width:34px;height:34px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-700);font-weight:700;font-size:13px;
}
.quote-user b{display:block;font-size:13.5px;color:var(--ink)}
.quote-user span{font-size:12px;color:var(--muted)}
.stars{color:#d9a33a;font-size:12.5px;letter-spacing:2px}

/* ============ plans ============ */
.plan{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.plan.featured{border-color:#b6dccc;box-shadow:0 20px 44px -32px rgba(15,96,74,.8);position:relative}
.plan.featured::before{
  content:"常看";position:absolute;top:-11px;left:24px;
  background:var(--brand);color:#fff;font-size:11.5px;letter-spacing:1px;
  padding:3px 10px;border-radius:999px;
}
.plan h3{font-size:17px;font-weight:800;margin-bottom:6px}
.plan .plan-sub{font-size:13px;color:var(--muted);margin-bottom:16px}
.plan ul{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.plan ul li{display:flex;gap:9px;font-size:13.6px;color:var(--ink-2);line-height:1.7}
.plan ul li svg{flex:0 0 auto;width:16px;height:16px;margin-top:4px;color:var(--brand)}
.plan .plan-foot{margin-top:auto;font-size:12.5px;color:var(--muted);padding-top:14px;border-top:1px solid var(--line)}

/* ============ channel matrix ============ */
.channel{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#bcdccc}
.channel .ch-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.channel h3{font-size:16.5px;font-weight:700}
.channel p{font-size:13.8px;color:var(--ink-2);line-height:1.75}
.channel .ch-link{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:var(--brand-700);margin-top:4px}
.channel:hover .ch-link{color:var(--brand-600)}

/* ============ news ============ */
.news-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:26px;align-items:start}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#cfe2da}
.news-thumb{
  width:78px;height:64px;border-radius:10px;flex:0 0 auto;overflow:hidden;background:#e8f1ec;
}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body h3{font-size:15.5px;font-weight:700;line-height:1.55;margin:6px 0 6px}
.news-body p{font-size:13.4px;color:var(--ink-2);line-height:1.72}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:9px;font-size:12.2px;color:var(--muted)}
.news-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow-xs);
}
.news-side h3{font-size:15px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.news-side h3::before{content:"";width:3px;height:15px;border-radius:2px;background:var(--brand)}
.side-item{display:block;padding:11px 0;border-bottom:1px dashed var(--line)}
.side-item:last-child{border-bottom:0}
.side-item b{display:block;font-size:13.8px;font-weight:600;color:var(--ink);line-height:1.6;transition:color .18s ease}
.side-item:hover b{color:var(--brand-600)}
.side-item span{font-size:12px;color:var(--muted)}
.empty{
  padding:34px;border:1px dashed #c9dcd4;border-radius:var(--radius);
  text-align:center;color:var(--muted);font-size:14px;background:#fbfdfc;
}

/* ============ guards ============ */
.guard{
  display:flex;gap:14px;align-items:flex-start;
  padding:20px;border-radius:var(--radius);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  transition:background .2s ease,transform .2s ease;
}
.guard:hover{background:rgba(255,255,255,.11);transform:translateY(-3px)}
.guard .g-icon{
  width:40px;height:40px;flex:0 0 auto;border-radius:11px;display:grid;place-items:center;
  background:rgba(127,224,192,.16);color:#8ee6c6;
}
.guard h3{font-size:15px;font-weight:700;color:#ffffff;margin-bottom:6px}
.guard p{font-size:13.4px;color:#b8d3cb;line-height:1.72}

/* ============ faq ============ */
.faq-wrap{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 20px;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#bcdccc;box-shadow:var(--shadow-xs)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 0;font-size:15px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:19px;font-weight:600;color:var(--brand);line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 0 18px;font-size:13.9px;color:var(--ink-2);line-height:1.85}

/* ============ cta form ============ */
.cta-panel{
  background:linear-gradient(135deg,#0e2f2c 0%,#12453c 58%,#155a49 100%);
  color:#e9f6f1;border-radius:var(--radius-lg);padding:40px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center;
  box-shadow:0 30px 60px -44px rgba(9,38,34,.95);
}
.cta-panel h2{font-size:27px;line-height:1.38;font-weight:800;color:#ffffff;margin-bottom:12px}
.cta-panel p{font-size:14.4px;line-height:1.85;color:#b9d8cf}
.trial-form{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius);padding:22px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:#cfe6de;margin-bottom:7px}
.field input,.field textarea{
  width:100%;padding:11px 13px;border-radius:9px;
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.1);
  color:#ffffff;font-size:14px;line-height:1.6;transition:border-color .2s ease,background .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:#a9c8bf}
.field input:focus,.field textarea:focus{outline:none;border-color:#7fe0c0;background:rgba(255,255,255,.16)}
.form-note{margin-top:10px;font-size:12.6px;color:#a9c8bf;min-height:18px}
.trial-form .btn{width:100%}

/* ============ footer ============ */
.site-footer{background:#0b2422;color:#adc9c1;padding:54px 0 26px;border-top:1px solid rgba(255,255,255,.07)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:34px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{font-size:16px;color:#ffffff;font-weight:700}
.site-footer h4{font-size:14px;color:#ffffff;font-weight:700;margin-bottom:14px;letter-spacing:.4px}
.footer-col p{font-size:13.4px;line-height:1.85;color:#9bb8b0}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13.4px;color:#a7c3bb;transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:#8ee6c6;transform:translateX(3px)}
.footer-bottom{padding-top:20px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.4px;color:#7f9d95}
.footer-bottom span{display:inline-block}

/* ============ responsive ============ */
@media (max-width:1024px){
  .hero h1{font-size:34px}
  .hero-grid{grid-template-columns:1fr}
  .side-a{transform:none}
  .hero-side{flex-direction:row;gap:16px}
  .hero-side .side-card{flex:1}
  .grid-4,.stat-strip,.steps,.timeline{grid-template-columns:repeat(2,1fr)}
  .timeline::before{display:none}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .news-layout{grid-template-columns:1fr}
  .showcase{grid-template-columns:1fr;gap:24px}
  .cta-panel{grid-template-columns:1fr;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav{display:none}
  .nav-toggle{display:flex}
  .header-cta .btn{display:none}
  .site-header.nav-open .nav{
    display:flex;flex-direction:column;align-items:stretch;
    position:absolute;left:0;right:0;top:100%;
    background:var(--surface);border-bottom:1px solid var(--line);
    padding:10px 16px 18px;gap:2px;
    box-shadow:0 22px 40px -30px rgba(16,35,40,.7);
  }
  .site-header.nav-open .nav-link{padding:12px 12px;border-radius:9px}
  .site-header.nav-open .nav-link.active::after{display:none}
  .site-header.nav-open .dropdown{
    position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:0;padding:2px 0 6px 14px;min-width:0;
  }
  .header-inner{position:relative;flex-wrap:wrap}
}
@media (max-width:768px){
  .hero{padding:38px 0 46px}
  .hero h1{font-size:28px;line-height:1.34}
  .hero-main{padding:26px 22px}
  .hero-side{flex-direction:column}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .section-head h2{font-size:24px}
  .grid-2,.grid-3,.grid-4,.stat-strip,.steps,.timeline,.faq-wrap{grid-template-columns:1fr}
  .compare-row{grid-template-columns:1fr}
  .compare-row > div{padding:12px 16px}
  .compare-head{display:none}
  .compare-row .row-key{background:#f3f8f5;font-weight:700;border-radius:0}
  .footer-grid{grid-template-columns:1fr}
  .cta-panel h2{font-size:22px}
  .brand-text em{display:none}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1{font-size:24px}
  .hero-facts{gap:16px}
  .hero-facts strong{font-size:19px}
  .hero-actions .btn{width:100%}
  .stat-cell{padding:20px 16px}
  .stat-cell strong{font-size:25px}
  .news-item{flex-direction:column;gap:10px}
  .news-thumb{width:100%;height:120px}
  .cta-panel{padding:24px 18px}
  .trial-form{padding:18px}
  .btn{padding:11px 16px;font-size:14px}
}

/* roulang page: category1 */
:root{
 --brand:#17795f;
 --brand-600:#0f604a;
 --brand-700:#0b4b3a;
 --brand-100:#e5f4ee;
 --ink:#102328;
 --ink-2:#3d565e;
 --muted:#6d8790;
 --bg:#f5f8f6;
 --surface:#ffffff;
 --line:#e2ebe7;
 --accent:#b8862f;
 --accent-soft:#fbf3e1;
 --radius-lg:18px;
 --radius:14px;
 --radius-sm:9px;
 --shadow-xs:0 1px 2px rgba(16,35,40,.05);
 --shadow-sm:0 8px 22px -14px rgba(16,35,40,.35);
 --shadow-md:0 22px 48px -28px rgba(16,35,40,.5);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:16px;
 line-height:1.78;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}

/* ============ header ============ */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 28px -22px rgba(16,35,40,.6);background:rgba(255,255,255,.98)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 auto;
 display:grid;place-items:center;
 background:linear-gradient(150deg,var(--brand) 0%,var(--brand-700) 100%);
 color:#fff;font-weight:700;font-size:17px;letter-spacing:0;
 box-shadow:0 8px 18px -12px rgba(15,96,74,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.4px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
 position:relative;display:inline-flex;align-items:center;gap:5px;
 padding:9px 13px;border-radius:var(--radius-sm);
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 transition:color .2s ease,background .2s ease;
 white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
 border-radius:2px;background:var(--brand);
}
.nav-item{position:relative}
.caret{
 width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
 transform:rotate(45deg) translateY(-2px);opacity:.6;display:inline-block;
}
.dropdown{
 position:absolute;top:calc(100% + 8px);left:0;min-width:196px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-md);padding:8px;
 opacity:0;visibility:hidden;transform:translateY(6px);
 transition:opacity .2s ease,transform .2s ease,visibility .2s ease;z-index:70;
}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{
 display:block;padding:8px 11px;border-radius:var(--radius-sm);
 font-size:13.5px;color:var(--ink-2);transition:background .18s ease,color .18s ease;
}
.dropdown a:hover{background:var(--brand-100);color:var(--brand-700)}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);
 align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:focus-visible,.btn:focus-visible,.nav-link:focus-visible,a:focus-visible,button:focus-visible{
 outline:2px solid var(--brand);outline-offset:2px;
}

/* ============ buttons ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 padding:11px 20px;border-radius:10px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;line-height:1.2;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -16px rgba(15,96,74,.95)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 16px 26px -16px rgba(15,96,74,.9)}
.btn-primary:active{transform:translateY(0);background:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:rgba(23,121,95,.35)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.14);color:#f2fbf7;border-color:rgba(255,255,255,.32)}
.btn-light:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}
.btn-lg{padding:14px 26px;font-size:15.5px;border-radius:11px}

/* ============ hero (category) ============ */
.cat-hero{
 position:relative;overflow:hidden;padding:52px 0 58px;
 background:#0b2226 url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
 color:#eaf5f1;
}
.cat-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(118deg,rgba(7,25,28,.94) 0%,rgba(9,36,37,.87) 48%,rgba(11,45,40,.76) 100%);
}
.cat-hero .container{position:relative;z-index:1}
.cat-hero-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:28px;align-items:start}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:#9ec4bb;margin-bottom:14px}
.crumb a{color:#bfe0d7}
.crumb a:hover{color:#8ee6c6}
.crumb span.sep{opacity:.5}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 padding:5px 12px;border-radius:999px;
 background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
 font-size:12.5px;letter-spacing:1px;color:#cfeae1;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:#5fd8b4;display:inline-block}
.cat-hero h1{
 margin:16px 0 14px;font-size:38px;line-height:1.3;font-weight:800;letter-spacing:.4px;color:#fff;
}
.cat-hero h1 span{color:#7fe0c0}
.hero-lead{font-size:15px;line-height:1.85;color:#c6dcd6;max-width:640px}
.hero-pills{display:flex;flex-wrap:wrap;gap:9px;margin:22px 0 24px}
.pill{
 display:inline-flex;align-items:center;gap:6px;
 padding:6px 13px;border-radius:999px;font-size:13px;
 background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#d9efe8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* status panel */
.status-panel{
 border-radius:var(--radius-lg);padding:22px;
 background:rgba(255,255,255,.09);
 border:1px solid rgba(255,255,255,.2);
 backdrop-filter:blur(6px);
 box-shadow:0 30px 60px -40px rgba(0,0,0,.8);
}
.status-panel h2{font-size:15px;font-weight:700;color:#fff;letter-spacing:.3px;margin-bottom:4px}
.status-panel .panel-note{font-size:12px;color:#a9c7c0;margin-bottom:16px}
.status-row{
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 padding:11px 12px;border-radius:var(--radius-sm);
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
 margin-bottom:9px;
}
.status-row:last-of-type{margin-bottom:0}
.status-row .name{font-size:13.5px;color:#e6f4ef;font-weight:600}
.status-row .time{font-size:11.5px;color:#9ec4bb;display:block;font-weight:400}
.state{
 display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
 padding:3px 10px;border-radius:999px;white-space:nowrap;
}
.state i{width:6px;height:6px;border-radius:50%;display:inline-block}
.state.ok{background:rgba(95,216,180,.16);color:#8ee6c6}
.state.ok i{background:#5fd8b4}
.state.mid{background:rgba(184,134,47,.2);color:#f0cf95}
.state.mid i{background:#e8b95c}
.panel-foot{margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#9ec4bb}

/* ============ sections ============ */
.section{padding:62px 0}
.section-alt{background:#eef5f1;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-dark{background:linear-gradient(160deg,#0d2a2c 0%,#0b3a30 100%);color:#dff0ea}
.section-head{margin-bottom:30px;max-width:780px}
.section-title{
 font-size:26px;font-weight:800;letter-spacing:.3px;line-height:1.4;
 padding-left:16px;position:relative;
}
.section-title::before{
 content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:3px;
 background:linear-gradient(180deg,var(--brand),var(--accent));
}
.section-sub{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8}
.section-dark .section-title{color:#fff}
.section-dark .section-sub{color:#a9c7c0}

/* stat board */
.stat-board{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 20px 18px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#cfe3da}
.stat-label{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:7px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--brand);display:inline-block}
.stat-value{font-size:30px;font-weight:800;color:var(--brand-700);line-height:1.3;margin:8px 0 2px;letter-spacing:.5px}
.stat-value small{font-size:14px;font-weight:600;color:var(--ink-2);margin-left:3px}
.stat-note{font-size:12.5px;color:var(--muted)}

/* service matrix */
.matrix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe3da}
.card-icon{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-100);color:var(--brand-700);margin-bottom:14px;
 border:1px solid rgba(23,121,95,.16);
}
.card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.card p{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
 display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
 font-size:12.5px;font-weight:500;background:var(--brand-100);color:var(--brand-700);
 border:1px solid rgba(23,121,95,.14);
}
.tag.gold{background:var(--accent-soft);color:#8a6420;border-color:rgba(184,134,47,.22)}

/* compare */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-card{
 border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);
 padding:24px;box-shadow:var(--shadow-xs);
}
.compare-card.best{border-color:rgba(23,121,95,.4);box-shadow:0 20px 44px -34px rgba(15,96,74,.8)}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.compare-head h3{font-size:17px;font-weight:700}
.badge{
 font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
 background:var(--brand);color:#fff;
}
.badge.muted{background:#eef2f0;color:var(--muted)}
.compare-card > p{font-size:13.5px;color:var(--muted);margin-bottom:16px}
.compare-list li{
 display:flex;align-items:flex-start;justify-content:space-between;gap:14px;
 padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;
}
.compare-list li:last-child{border-bottom:none;padding-bottom:0}
.compare-list .k{color:var(--muted);flex:0 0 auto}
.compare-list .v{text-align:right;color:var(--ink-2);font-weight:600}
.compare-list .v.no{color:#a8563a;font-weight:500}
.compare-list .v.yes{color:var(--brand-700)}

/* timeline */
.timeline{position:relative;margin-left:8px;padding-left:26px;border-left:2px dashed #cfe0d8}
.timeline-item{position:relative;padding:0 0 26px 20px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
 content:"";position:absolute;left:-34px;top:6px;width:11px;height:11px;border-radius:50%;
 background:var(--brand);box-shadow:0 0 0 4px var(--brand-100);
}
.timeline-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.timeline-item .stamp{font-size:12.5px;color:var(--accent);font-weight:600;letter-spacing:.6px;margin-bottom:4px;display:block}
.timeline-item p{font-size:14px;color:var(--ink-2)}

/* scenes */
.scene-wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:22px;align-items:start}
.scene-visual{
 position:relative;border-radius:var(--radius-lg);overflow:hidden;
 border:1px solid var(--line);box-shadow:var(--shadow-sm);background:#0d2a2c;
}
.scene-visual img{width:100%;aspect-ratio:16/11;object-fit:cover}
.scene-visual .caption{
 position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
 background:linear-gradient(180deg,rgba(9,36,37,0) 0%,rgba(9,36,37,.9) 100%);
 color:#e6f4ef;font-size:13.5px;line-height:1.7;
}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.scene-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:18px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#cfe3da}
.scene-item h3{font-size:15px;font-weight:700;margin-bottom:6px}
.scene-item p{font-size:13.5px;color:var(--ink-2);line-height:1.75}

/* assurance */
.assure-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.assure-item{
 border-radius:var(--radius);padding:22px;
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
 transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.assure-item:hover{background:rgba(255,255,255,.12);transform:translateY(-3px);border-color:rgba(255,255,255,.3)}
.assure-item h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px}
.assure-item p{font-size:14px;color:#bcd8cf;line-height:1.8}
.assure-num{font-size:12.5px;font-weight:700;color:#8ee6c6;letter-spacing:1.6px;display:block;margin-bottom:8px}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-xs);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(23,121,95,.34);box-shadow:var(--shadow-sm)}
.faq-item summary{
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:17px 20px;font-size:15.5px;font-weight:600;cursor:pointer;list-style:none;
 color:var(--ink);transition:color .2s ease,background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-700);background:var(--brand-100)}
.faq-item summary::after{
 content:"+";font-size:19px;font-weight:500;color:var(--brand);line-height:1;flex:0 0 auto;
}
.faq-item[open] summary::after{content:"–"}
.faq-body{padding:0 20px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.85}

/* form */
.form-shell{
 display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:30px;box-shadow:var(--shadow-sm);
}
.form-info h3{font-size:20px;font-weight:800;margin-bottom:10px}
.form-info p{font-size:14.5px;color:var(--ink-2);line-height:1.85;margin-bottom:16px}
.form-info ul li{
 position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);margin-bottom:9px;line-height:1.7;
}
.form-info ul li::before{
 content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
 background:var(--accent);transform:rotate(45deg);
}
.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{
 width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--line);
 background:#fbfdfc;font-size:14px;color:var(--ink);font-family:inherit;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{resize:vertical;min-height:92px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
 outline:none;border-color:var(--brand);background:#fff;
 box-shadow:0 0 0 3px rgba(23,121,95,.13);
}
.form-tip{grid-column:1 / -1;font-size:12.5px;color:var(--muted)}
.form-msg{
 grid-column:1 / -1;display:none;font-size:13.5px;font-weight:600;
 padding:10px 14px;border-radius:10px;background:var(--brand-100);color:var(--brand-700);
 border:1px solid rgba(23,121,95,.2);
}
.form-msg.show{display:block}

/* ============ footer ============ */
.site-footer{background:#0c2426;color:#c3d8d2;padding:48px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:32px;padding-bottom:30px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand strong{font-size:16px;font-weight:700;color:#fff;letter-spacing:.3px}
.footer-col p{font-size:13.5px;line-height:1.85;color:#a5c0b9;max-width:360px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.4px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:#a5c0b9;transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:#8ee6c6;transform:translateX(2px)}
.footer-bottom{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
 padding:16px 0 22px;border-top:1px solid rgba(255,255,255,.12);
 font-size:12.5px;color:#88a49d;
}

/* ============ responsive ============ */
@media (max-width:1080px){
 .cat-hero h1{font-size:34px}
 .stat-board{grid-template-columns:repeat(2,1fr)}
 .assure-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
 .nav-toggle{display:inline-flex}
 .nav{
  position:absolute;top:64px;left:0;right:0;margin-left:0;
  flex-direction:column;align-items:stretch;gap:2px;
  background:var(--surface);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-md);padding:12px 18px 16px;display:none;
  max-height:calc(100vh - 64px);overflow-y:auto;
 }
 .nav.is-open{display:flex}
 .nav-item{width:100%}
 .nav-link{width:100%;padding:11px 12px;font-size:15px}
 .nav-link.active::after{display:none}
 .dropdown{
  position:static;opacity:1;visibility:visible;transform:none;
  box-shadow:none;border:none;border-left:2px solid var(--line);
  padding:2px 0 6px 10px;margin:2px 0 6px 14px;display:block;min-width:0;
 }
 .header-cta .btn-sm{display:none}
 .cat-hero-grid{grid-template-columns:1fr}
 .cat-hero{padding:40px 0 46px}
 .matrix-grid{grid-template-columns:1fr}
 .compare-grid{grid-template-columns:1fr}
 .scene-wrap{grid-template-columns:1fr}
 .form-shell{grid-template-columns:1fr;padding:24px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:768px){
 .section{padding:48px 0}
 .section-title{font-size:22px}
 .cat-hero h1{font-size:29px;line-height:1.34}
 .hero-lead{font-size:14.5px}
 .assure-grid{grid-template-columns:1fr}
 .scene-grid{grid-template-columns:1fr}
 .lead-form{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .footer-col p{max-width:none}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .brand-text strong{font-size:14.5px}
 .brand-text em{display:none}
 .cat-hero h1{font-size:25px}
 .stat-board{grid-template-columns:1fr}
 .stat-value{font-size:26px}
 .hero-actions .btn{width:100%}
 .compare-list li{flex-direction:column;gap:3px;align-items:flex-start}
 .compare-list .v{text-align:left}
 .btn{padding:11px 18px}
 .section-title{font-size:20px}
}

/* roulang page: article */
:root{
 --brand:#17795f;
 --brand-600:#0f604a;
 --brand-700:#0b4b3a;
 --brand-100:#e5f4ee;
 --ink:#102328;
 --ink-2:#3d565e;
 --muted:#6d8790;
 --bg:#f5f8f6;
 --surface:#ffffff;
 --line:#e2ebe7;
 --accent:#b8862f;
 --accent-soft:#fbf3e1;
 --radius-lg:18px;
 --radius:14px;
 --radius-sm:9px;
 --shadow-xs:0 1px 2px rgba(16,35,40,.05);
 --shadow-sm:0 8px 22px -14px rgba(16,35,40,.35);
 --shadow-md:0 22px 48px -28px rgba(16,35,40,.5);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:16px;
 line-height:1.78;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
html body img{max-width:100%;display:block;height:auto}
html body a{color:inherit;text-decoration:none}
html body button,html body input,html body textarea,html body select{font:inherit;color:inherit}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0}
.skip-link:focus{left:0}
/* ============ header ============ */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 28px -22px rgba(16,35,40,.6);background:rgba(255,255,255,.98)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 auto;
 display:grid;place-items:center;
 background:linear-gradient(150deg,var(--brand) 0%,var(--brand-700) 100%);
 color:#fff;font-weight:700;font-size:17px;
 box-shadow:0 8px 18px -12px rgba(15,96,74,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.4px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
 position:relative;display:inline-flex;align-items:center;gap:5px;
 padding:9px 13px;border-radius:var(--radius-sm);
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 transition:color .2s ease,background .2s ease;
 white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
 border-radius:2px;background:var(--brand);
}
.nav-item{position:relative}
.caret{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;display:inline-block;opacity:.55;transform:translateY(-1px)}
.nav-item .dropdown{
 position:absolute;left:0;top:calc(100% + 8px);z-index:80;
 min-width:190px;padding:8px;
 background:var(--surface);border:1px solid var(--line);
 border-radius:12px;box-shadow:var(--shadow-md);
 opacity:0;visibility:hidden;transform:translateY(-6px);
 transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{
 display:block;padding:8px 11px;border-radius:var(--radius-sm);
 font-size:13.5px;color:var(--ink-2);transition:background .18s ease,color .18s ease;
}
.dropdown a:hover{background:var(--brand-100);color:var(--brand-700)}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);
 align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:focus-visible,.btn:focus-visible,.nav-link:focus-visible,a:focus-visible{
 outline:2px solid var(--brand);outline-offset:2px;
}
/* ============ buttons ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 padding:11px 20px;border-radius:10px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;line-height:1.2;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -16px rgba(15,96,74,.95)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 16px 26px -16px rgba(15,96,74,.9)}
.btn-primary:active{transform:translateY(0);background:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:rgba(23,121,95,.35)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.14);color:#f2fbf7;border-color:rgba(255,255,255,.32)}
.btn-light:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}
.btn-block{width:100%}
/* ============ article hero ============ */
.article-hero{
 position:relative;overflow:hidden;
 padding:34px 0 58px;
 background:#0b2226 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
 color:#eaf5f1;
}
.article-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(118deg,rgba(7,25,28,.94) 0%,rgba(9,36,37,.87) 48%,rgba(11,45,40,.74) 100%);
}
.article-hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#a9c7c0}
.crumbs a{transition:color .2s ease}
.crumbs a:hover{color:#8ee6c6}
.crumbs .sep{opacity:.45}
.crumbs .current{color:#d9efe8}
.article-hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:34px;align-items:center;margin-top:22px}
.tag{
 display:inline-flex;align-items:center;
 padding:4px 11px;border-radius:999px;
 font-size:12px;font-weight:500;
 background:var(--brand-100);color:var(--brand-700);
 border:1px solid rgba(23,121,95,.16);
}
.tag-accent{background:var(--accent-soft);color:#8a6520;border-color:rgba(184,134,47,.25)}
.tag-dark{background:rgba(255,255,255,.12);color:#d9efe8;border:1px solid rgba(255,255,255,.22)}
.article-title{
 margin:16px 0 14px;font-size:36px;line-height:1.34;font-weight:800;letter-spacing:.3px;color:#ffffff;
}
.article-lead{font-size:15px;line-height:1.85;color:#c6dcd6;max-width:620px;margin:0}
.hero-pills{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0 0}
.pill{
 display:inline-flex;align-items:center;gap:6px;
 padding:6px 13px;border-radius:999px;font-size:12.5px;
 background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#d9efe8;
}
.article-meta{
 display:flex;flex-wrap:wrap;gap:20px;
 margin-top:24px;padding-top:18px;
 border-top:1px solid rgba(255,255,255,.16);
 font-size:13px;color:#a9c7c0;
}
.article-meta strong{color:#e6f6f0;font-weight:600}
.article-hero-media{
 margin:0;border-radius:var(--radius-lg);overflow:hidden;
 border:1px solid rgba(255,255,255,.18);
 box-shadow:0 30px 60px -40px rgba(0,0,0,.85);
 aspect-ratio:16/11;background:#0a1f1c;
}
.article-hero-media img{width:100%;height:100%;object-fit:cover}
/* ============ layout ============ */
.article-section{padding:56px 0 66px;background:var(--bg)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 322px;gap:30px;align-items:start}
.article-card{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);
 padding:32px 36px;
}
.article-content{color:var(--ink-2);font-size:15.5px;line-height:1.86}
.article-content>*:first-child{margin-top:0}
.article-content p{margin:0 0 18px;line-height:1.86}
.article-content h2{
 position:relative;margin:34px 0 14px;padding-left:14px;
 font-size:22px;line-height:1.42;font-weight:700;color:var(--ink);
}
.article-content h2::before{
 content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;
 border-radius:4px;background:var(--brand);
}
.article-content h3{margin:24px 0 10px;font-size:17.5px;font-weight:700;color:var(--ink)}
.article-content ul,.article-content ol{margin:0 0 18px;padding-left:22px}
.article-content li{margin:6px 0}
.article-content strong{color:var(--ink);font-weight:700}
.article-content em{font-style:normal;color:var(--brand-600);font-weight:600}
.article-content a{color:var(--brand-600);border-bottom:1px solid rgba(23,121,95,.35);transition:color .2s ease,border-color .2s ease}
.article-content a:hover{color:var(--brand-700);border-color:var(--brand-700)}
.article-content blockquote{
 margin:22px 0;padding:16px 20px;
 background:var(--brand-100);border-left:4px solid var(--brand);
 border-radius:0 12px 12px 0;color:var(--brand-700);font-size:14.5px;
}
.article-content img{border-radius:12px;margin:22px auto;box-shadow:var(--shadow-sm)}
.article-content figure{margin:22px 0}
.article-content figcaption{text-align:center;font-size:12.5px;color:var(--muted);margin-top:8px}
.article-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-content th{background:#f2f8f5;color:var(--brand-700);font-weight:600}
.article-empty{text-align:center;padding:30px 10px}
.article-empty h2{margin:0 0 10px;font-size:22px;font-weight:700;color:var(--ink);padding-left:0}
.article-empty h2::before{display:none}
.article-empty p{margin:0 0 20px;color:var(--muted);font-size:14.5px}
/* ============ aside ============ */
.article-aside{display:flex;flex-direction:column;gap:18px;position:sticky;top:84px}
.aside-card{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-xs);
 padding:20px 22px;
 transition:box-shadow .2s ease,border-color .2s ease;
}
.aside-card:hover{box-shadow:var(--shadow-sm);border-color:rgba(23,121,95,.28)}
.aside-card h3{
 margin:0 0 14px;font-size:15px;font-weight:700;color:var(--ink);
 display:flex;align-items:center;gap:9px;
}
.aside-card h3::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--brand);flex:0 0 auto}
.aside-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;font-size:13.5px}
.aside-list li{display:flex;justify-content:space-between;gap:12px;color:var(--muted)}
.aside-list b{color:var(--ink);font-weight:600;text-align:right}
.status-item{display:flex;align-items:center;gap:9px;padding:8px 0;font-size:13.5px;color:var(--ink-2);border-bottom:1px dashed var(--line)}
.status-item:last-child{border-bottom:none;padding-bottom:0}
.status-item:first-of-type{padding-top:0}
.dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto}
.dot-ok{background:#1fa97e;box-shadow:0 0 0 4px rgba(31,169,126,.13)}
.dot-warn{background:var(--accent);box-shadow:0 0 0 4px rgba(184,134,47,.15)}
.status-item em{margin-left:auto;font-style:normal;font-size:12.5px;color:var(--muted)}
.aside-tips{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--ink-2)}
.aside-tips li{position:relative;padding-left:14px;line-height:1.7}
.aside-tips li::before{content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--brand)}
/* ============ sections ============ */
.section{padding:64px 0}
.section-alt{background:#ffffff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:30px}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:1.6px;font-weight:700;
 color:var(--brand-600);
}
.section-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{margin:10px 0 8px;font-size:27px;line-height:1.42;font-weight:800;color:var(--ink);letter-spacing:.2px}
.section-desc{margin:0;color:var(--muted);font-size:14.5px;line-height:1.82}
/* cards */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.info-card{
 display:flex;flex-direction:column;gap:10px;
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:24px;
 box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(23,121,95,.35)}
.card-icon{
 width:42px;height:42px;border-radius:12px;
 display:grid;place-items:center;
 background:var(--brand-100);color:var(--brand-700);
 border:1px solid rgba(23,121,95,.16);
}
.info-card h3{margin:4px 0 0;font-size:17px;font-weight:700;color:var(--ink)}
.info-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.78}
.tagline{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:12px}
/* metrics */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.metric{
 position:relative;overflow:hidden;
 background:linear-gradient(158deg,#10312d 0%,#0b2226 100%);
 border:1px solid rgba(255,255,255,.1);
 border-radius:var(--radius);padding:22px;color:#eaf5f1;
 transition:transform .2s ease,box-shadow .2s ease;
}
.metric:hover{transform:translateY(-3px);box-shadow:0 24px 44px -30px rgba(11,34,38,.9)}
.metric::after{
 content:"";position:absolute;right:-34px;top:-34px;width:96px;height:96px;border-radius:50%;
 background:radial-gradient(circle,rgba(127,224,192,.24),transparent 70%);
}
.metric strong{display:block;font-size:27px;font-weight:800;color:#8ee6c6;line-height:1.25;margin-bottom:4px}
.metric span{display:block;font-size:13px;color:#a9c7c0;line-height:1.7}
/* table */
.table-wrap{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-xs);
 overflow-x:auto;
}
.rule-table{width:100%;border-collapse:collapse;min-width:660px;font-size:14.5px}
.rule-table th{
 background:#f2f8f5;color:var(--brand-700);font-weight:600;
 text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.rule-table td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--ink-2);line-height:1.72}
.rule-table tbody tr{transition:background .18s ease}
.rule-table tbody tr:hover{background:#f8fcfa}
.rule-table tr:last-child td{border-bottom:none}
.rule-table b{color:var(--ink);font-weight:600}
.table-note{margin:14px 0 0;font-size:12.5px;color:var(--muted)}
/* version compare */
.version-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;align-items:stretch}
.version-card{
 position:relative;
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius-lg);padding:28px;
 box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.version-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(23,121,95,.3)}
.version-card.is-recommended{
 border-color:rgba(23,121,95,.45);
 background:linear-gradient(172deg,#ffffff 0%,#f3fbf7 100%);
 box-shadow:0 26px 48px -34px rgba(15,96,74,.7);
}
.version-badge{
 position:absolute;top:18px;right:18px;
 font-size:11.5px;font-weight:600;padding:4px 11px;border-radius:999px;
 background:var(--brand);color:#fff;letter-spacing:.3px;
}
.version-card h3{margin:0 0 6px;font-size:19px;font-weight:700;color:var(--ink)}
.version-sub{margin:0;font-size:13px;color:var(--muted)}
.version-list{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--ink-2)}
.version-list li{display:flex;gap:10px;align-items:flex-start;line-height:1.7}
.version-list li::before{content:"";width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--brand);flex:0 0 auto}
.version-list li.is-muted::before{background:#c3d3cd}
/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px}
.faq-item{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-xs);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:rgba(23,121,95,.28)}
.faq-item[open]{border-color:rgba(23,121,95,.35);box-shadow:var(--shadow-sm)}
.faq-item summary{
 list-style:none;cursor:pointer;
 padding:18px 22px;
 font-size:15.5px;font-weight:600;color:var(--ink);
 display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:20px;font-weight:400;color:var(--brand);line-height:1;
 transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 18px;font-size:14.5px;line-height:1.85;color:var(--muted)}
/* cta */
.cta-section{
 position:relative;overflow:hidden;
 padding:64px 0;
 background:#0b2226 url('/assets/images/backpic/back-4.webp') center/cover no-repeat;
 color:#eaf5f1;
}
.cta-section::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(7,25,28,.95) 0%,rgba(9,38,35,.88) 55%,rgba(11,45,40,.82) 100%)}
.cta-section .container{position:relative;z-index:1}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:38px;align-items:start}
.cta-copy h2{margin:0 0 12px;font-size:28px;line-height:1.42;font-weight:800;color:#fff;letter-spacing:.2px}
.cta-copy p{margin:0 0 18px;font-size:14.5px;line-height:1.85;color:#c6dcd6}
.cta-points{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;font-size:14px;color:#cfe7e0}
.cta-points li{display:flex;gap:10px;align-items:flex-start;line-height:1.7}
.cta-points li::before{content:"";width:6px;height:6px;margin-top:9px;border-radius:50%;background:#7fe0c0;flex:0 0 auto}
.form-card{
 background:rgba(255,255,255,.97);
 border-radius:var(--radius-lg);
 padding:26px 26px 22px;
 box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
}
.form-card h3{margin:0 0 6px;font-size:17px;font-weight:700;color:var(--ink)}
.form-card>p{margin:0 0 18px;font-size:13px;color:var(--muted)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:13px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{
 width:100%;padding:11px 13px;
 border:1px solid var(--line);border-radius:10px;
 background:#fbfdfc;font-size:14px;color:var(--ink);
 outline:none;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:#a8b9b4}
.field input:focus,.field select:focus,.field textarea:focus{
 border-color:var(--brand);background:#fff;
 box-shadow:0 0 0 3px rgba(23,121,95,.14);
}
.field textarea{min-height:96px;resize:vertical}
.form-hint{margin:10px 0 0;font-size:12.5px;line-height:1.7;color:var(--muted)}
.form-note{
 display:none;margin-top:12px;padding:10px 12px;border-radius:9px;
 background:var(--brand-100);color:var(--brand-700);font-size:13.5px;
}
.form-note.is-visible{display:block}
/* ============ footer ============ */
.site-footer{background:#0b1f22;color:#c7d8d3;padding:52px 0 24px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff}
.footer-brand strong{font-size:16px;font-weight:700}
.footer-col p{margin:0;font-size:13.5px;line-height:1.8;color:#9fb8b3;max-width:360px}
.footer-col h4{margin:0 0 14px;font-size:14px;color:#fff;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:9px;font-size:13.5px}
.footer-links a{color:#9fb8b3;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:#8ee6c6;transform:translateX(2px)}
.footer-bottom{
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
 margin-top:36px;padding-top:18px;
 border-top:1px solid rgba(255,255,255,.1);
 font-size:12.5px;color:#7d9691;
}
/* ============ responsive ============ */
@media (max-width:1100px){
 .nav{
  display:none;position:absolute;top:100%;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:2px;
  padding:10px 18px 16px;margin-left:0;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 22px 40px -28px rgba(16,35,40,.6);
 }
 .nav.is-open{display:flex}
 .nav-link{padding:12px;border-radius:10px}
 .nav-link.active::after{display:none}
 .nav-item .dropdown{display:none}
 .nav-toggle{display:inline-flex}
 .article-layout{grid-template-columns:minmax(0,1fr)}
 .article-aside{position:static}
}
@media (max-width:1024px){
 .article-hero-grid{grid-template-columns:minmax(0,1fr);gap:24px}
 .article-hero-media{max-width:560px;aspect-ratio:16/9}
 .article-title{font-size:31px}
 .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .cta-grid{grid-template-columns:minmax(0,1fr);gap:26px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .footer-col:first-child{grid-column:1 / -1}
}
@media (max-width:768px){
 .section{padding:48px 0}
 .article-section{padding:42px 0 52px}
 .article-card{padding:24px 22px}
 .article-title{font-size:26px}
 .article-lead{font-size:14.5px}
 .section-title{font-size:23px}
 .card-grid{grid-template-columns:minmax(0,1fr)}
 .version-grid{grid-template-columns:minmax(0,1fr)}
 .form-row{grid-template-columns:minmax(0,1fr)}
 .cta-copy h2{font-size:23px}
 .brand-text strong{font-size:15px}
 .brand-text em{display:none}
 .article-content h2{font-size:20px}
 .article-content{font-size:15px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .header-inner{gap:10px}
 .header-cta .btn-sm{padding:8px 12px;font-size:12.5px}
 .article-hero{padding:26px 0 44px}
 .article-title{font-size:23px;line-height:1.4}
 .article-meta{gap:12px;font-size:12.5px}
 .metrics{grid-template-columns:minmax(0,1fr)}
 .metric strong{font-size:24px}
 .article-card{padding:20px 16px}
 .form-card{padding:20px 16px 16px}
 .faq-item summary{padding:15px 16px;font-size:14.5px}
 .faq-body{padding:0 16px 16px}
 .footer-grid{grid-template-columns:minmax(0,1fr)}
}

/* roulang page: category2 */
:root{
 --brand:#17795f;
 --brand-600:#0f604a;
 --brand-700:#0b4b3a;
 --brand-100:#e5f4ee;
 --ink:#102328;
 --ink-2:#3d565e;
 --muted:#6d8790;
 --bg:#f5f8f6;
 --surface:#ffffff;
 --line:#e2ebe7;
 --accent:#b8862f;
 --accent-soft:#fbf3e1;
 --radius-lg:18px;
 --radius:14px;
 --radius-sm:9px;
 --shadow-xs:0 1px 2px rgba(16,35,40,.05);
 --shadow-sm:0 8px 22px -14px rgba(16,35,40,.35);
 --shadow-md:0 22px 48px -28px rgba(16,35,40,.5);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:16px;
 line-height:1.78;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}

/* ============ header ============ */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 28px -22px rgba(16,35,40,.6);background:rgba(255,255,255,.98)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 auto;
 display:grid;place-items:center;
 background:linear-gradient(150deg,var(--brand) 0%,var(--brand-700) 100%);
 color:#fff;font-weight:700;font-size:17px;letter-spacing:0;
 box-shadow:0 8px 18px -12px rgba(15,96,74,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.4px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
 position:relative;display:inline-flex;align-items:center;gap:5px;
 padding:9px 13px;border-radius:var(--radius-sm);
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 transition:color .2s ease,background .2s ease;
 white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
 border-radius:2px;background:var(--brand);
}
.nav-item{position:relative}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.caret{
 width:0;height:0;border-left:3.5px solid transparent;border-right:3.5px solid transparent;
 border-top:4.5px solid currentColor;opacity:.55;margin-top:2px;
}
.dropdown{
 position:absolute;top:calc(100% + 8px);left:0;min-width:196px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-md);padding:8px;
 opacity:0;visibility:hidden;transform:translateY(-6px);
 transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.dropdown a{
 display:block;padding:8px 11px;border-radius:var(--radius-sm);
 font-size:13.5px;color:var(--ink-2);transition:background .18s ease,color .18s ease;
}
.dropdown a:hover{background:var(--brand-100);color:var(--brand-700)}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);
 align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:focus-visible,.btn:focus-visible,.nav-link:focus-visible,a:focus-visible,button:focus-visible{
 outline:2px solid var(--brand);outline-offset:2px;
}

/* ============ buttons ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 padding:11px 20px;border-radius:10px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;line-height:1.2;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -16px rgba(15,96,74,.95)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 16px 26px -16px rgba(15,96,74,.9)}
.btn-primary:active{transform:translateY(0);background:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:rgba(23,121,95,.35)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.14);color:#f2fbf7;border-color:rgba(255,255,255,.32)}
.btn-light:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}

/* ============ page hero ============ */
.rule-hero{
 position:relative;overflow:hidden;
 padding:46px 0 54px;
 background:#0b2226 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
 color:#eaf5f1;
}
.rule-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(120deg,rgba(7,25,28,.94) 0%,rgba(9,36,37,.88) 48%,rgba(11,45,40,.76) 100%);
}
.rule-hero .container{position:relative;z-index:1}
.rule-hero-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:30px;align-items:center}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 padding:5px 12px;border-radius:999px;
 background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
 font-size:12.5px;letter-spacing:1px;color:#cfeae1;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:#5fd8b4;display:inline-block}
.rule-hero h1{
 margin:16px 0 14px;font-size:36px;line-height:1.34;font-weight:800;color:#fff;
}
.rule-hero h1 span{color:#7fe0c0}
.rule-lead{font-size:15px;line-height:1.86;color:#c6dcd6;max-width:620px}
.rule-pills{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0 0}
.pill{
 display:inline-flex;align-items:center;gap:6px;
 padding:6px 13px;border-radius:999px;font-size:13px;
 background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#d9efe8;
}
.icon-matrix{
 display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-lg);padding:18px;backdrop-filter:blur(6px);
 box-shadow:0 30px 60px -44px rgba(0,0,0,.9);
}
.icon-cell{
 display:flex;align-items:flex-start;gap:10px;
 padding:13px 12px;border-radius:var(--radius);
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
 transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.icon-cell:hover{background:rgba(255,255,255,.13);transform:translateY(-3px);border-color:rgba(127,224,192,.5)}
.icon-cell svg{flex:0 0 auto;color:#8ee6c6;margin-top:2px}
.icon-cell strong{display:block;font-size:14px;color:#f0fbf7;line-height:1.5}
.icon-cell em{font-style:normal;display:block;font-size:12px;color:#9dbfb7;line-height:1.5}
.status-bar{
 margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
 padding:12px 16px;border-radius:var(--radius);
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
 font-size:13px;color:#c6dcd6;
}
.status-bar b{color:#8ee6c6;font-weight:700}
.status-dot{width:8px;height:8px;border-radius:50%;background:#5fd8b4;display:inline-block;box-shadow:0 0 0 4px rgba(95,216,180,.18)}

/* ============ sections ============ */
.section{padding:56px 0}
.section-tight{padding:44px 0}
.section-alt{background:linear-gradient(180deg,#eef5f1 0%,#f5f8f6 100%)}
.section-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.sec-head .title-wrap{max-width:720px}
.sec-kicker{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
 letter-spacing:1.6px;color:var(--brand);text-transform:uppercase;
}
.sec-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.sec-head h2{font-size:26px;line-height:1.42;margin-top:8px;color:var(--ink)}
.sec-head p{font-size:14.5px;color:var(--muted);margin-top:8px;line-height:1.8}
.sec-link{font-size:13.5px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:5px}
.sec-link:hover{color:var(--brand-700);text-decoration:underline}

/* ============ metric board ============ */
.metric-board{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-sm);padding:22px;
}
.metric{padding:6px 8px;border-left:3px solid var(--brand-100);padding-left:14px}
.metric strong{display:block;font-size:26px;font-weight:800;color:var(--brand-700);line-height:1.25}
.metric span{font-size:13px;color:var(--muted)}
.metric em{font-style:normal;display:block;font-size:12.5px;color:var(--ink-2);margin-top:4px;line-height:1.6}

/* ============ cards ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-xs);padding:22px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
 display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:rgba(23,121,95,.35)}
.card-icon{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-100);color:var(--brand-700);margin-bottom:14px;
}
.card h3{font-size:17px;line-height:1.5;margin-bottom:8px}
.card p{font-size:14px;line-height:1.8;color:var(--ink-2)}
.card-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.tag{
 font-size:12px;padding:3px 10px;border-radius:999px;
 background:var(--brand-100);color:var(--brand-700);font-weight:600;
}
.tag-amber{background:var(--accent-soft);color:#8a6418}

/* ============ feature split ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.split-media .media-badge{
 position:absolute;left:16px;bottom:16px;
 padding:8px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
 color:#f0fbf7;background:rgba(11,75,58,.82);border:1px solid rgba(255,255,255,.24);
 backdrop-filter:blur(4px);
}
.check-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
.check-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;line-height:1.78;color:var(--ink-2)}
.check-list li svg{flex:0 0 auto;margin-top:5px;color:var(--brand)}
.check-list b{color:var(--ink)}

/* ============ score table ============ */
.ledger{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-sm);overflow:hidden;
}
.ledger-head{
 display:grid;grid-template-columns:1.4fr 1fr 1.6fr;
 gap:12px;padding:14px 20px;background:#eef5f1;border-bottom:1px solid var(--line);
 font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--brand-700);
}
.ledger-row{
 display:grid;grid-template-columns:1.4fr 1fr 1.6fr;gap:12px;
 padding:15px 20px;border-bottom:1px solid var(--line);
 font-size:14px;align-items:center;transition:background .18s ease;
}
.ledger-row:last-child{border-bottom:0}
.ledger-row:hover{background:#f7fbf9}
.ledger-row strong{font-size:14.5px;color:var(--ink)}
.ledger-row .pts{font-weight:700;color:var(--accent);font-size:15px}
.ledger-row span{color:var(--ink-2);font-size:13.5px;line-height:1.7}

/* ============ timeline ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;counter-reset:step}
.step{
 position:relative;background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:22px 20px 20px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:rgba(23,121,95,.3)}
.step::before{
 counter-increment:step;content:"0" counter(step);
 display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.4px;
 color:var(--brand);background:var(--brand-100);border-radius:6px;padding:2px 8px;margin-bottom:12px;
}
.step h3{font-size:16px;margin-bottom:7px}
.step p{font-size:13.5px;line-height:1.76;color:var(--ink-2)}

/* ============ compare ============ */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.compare-panel{
 border-radius:var(--radius-lg);padding:24px;border:1px solid var(--line);
 background:var(--surface);box-shadow:var(--shadow-xs);
}
.compare-panel.dark{
 background:linear-gradient(160deg,#0b3a30 0%,#0b2226 100%);color:#dff1ea;border-color:#12453a;
}
.compare-panel h3{font-size:17px;margin-bottom:4px}
.compare-panel .sub{font-size:12.5px;letter-spacing:1.2px;color:var(--muted);margin-bottom:14px;display:block}
.compare-panel.dark .sub{color:#8fb6ab}
.compare-panel ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.compare-panel li{
 font-size:14px;line-height:1.76;padding-left:20px;position:relative;color:var(--ink-2);
}
.compare-panel.dark li{color:#c4ded6}
.compare-panel li::before{
 content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
 background:var(--brand);box-shadow:0 0 0 3px rgba(23,121,95,.14);
}
.compare-panel.dark li::before{background:#5fd8b4;box-shadow:0 0 0 3px rgba(95,216,180,.16)}

/* ============ news list ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{
 display:flex;flex-direction:column;background:var(--surface);
 border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
 box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:rgba(23,121,95,.35)}
.news-top{padding:20px 20px 0}
.news-cat{
 display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.6px;
 color:var(--brand-700);background:var(--brand-100);border-radius:6px;padding:3px 9px;margin-bottom:11px;
}
.news-card h3{font-size:16px;line-height:1.55;margin-bottom:8px;padding:0 20px}
.news-card p{font-size:13.5px;line-height:1.76;color:var(--ink-2);padding:0 20px;flex:1 0 auto}
.news-foot{
 display:flex;align-items:center;justify-content:space-between;gap:10px;
 padding:14px 20px;margin-top:16px;border-top:1px dashed var(--line);
 font-size:12.5px;color:var(--muted);
}
.news-foot span{color:var(--brand-600);font-weight:600}
.empty-note{
 padding:30px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius);
 color:var(--muted);background:var(--surface);font-size:14px;
}

/* ============ faq ============ */
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-xs);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(23,121,95,.35);box-shadow:var(--shadow-sm)}
.faq-item summary{
 cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:17px 20px;font-size:15.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:19px;font-weight:400;color:var(--brand);line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";transform:rotate(180deg)}
.faq-body{padding:0 20px 18px;font-size:14px;line-height:1.82;color:var(--ink-2)}

/* ============ cta form ============ */
.cta-band{
 border-radius:var(--radius-lg);overflow:hidden;position:relative;
 background:#0b2226 url('/assets/images/backpic/back-5.gif') center/cover no-repeat;
 color:#eaf5f1;box-shadow:var(--shadow-md);
}
.cta-band::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(115deg,rgba(7,32,30,.95) 0%,rgba(9,45,40,.88) 100%);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:34px;padding:38px}
.cta-copy h2{font-size:25px;line-height:1.44;color:#fff;margin-bottom:12px}
.cta-copy p{font-size:14.5px;line-height:1.84;color:#c6dcd6}
.cta-points{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:9px}
.cta-points li{font-size:13.5px;color:#cfe8e0;display:flex;gap:9px;align-items:flex-start}
.cta-points li::before{content:"·";color:#7fe0c0;font-weight:800}
.form-card{
 background:rgba(255,255,255,.96);border-radius:var(--radius);padding:22px;
 box-shadow:0 26px 50px -34px rgba(0,0,0,.9);border:1px solid rgba(255,255,255,.5);
}
.field{margin-bottom:13px}
.field label{display:block;font-size:12.5px;font-weight:700;letter-spacing:.6px;color:var(--ink-2);margin-bottom:6px}
.field input,.field textarea,.field select{
 width:100%;padding:11px 13px;border-radius:var(--radius-sm);border:1px solid var(--line);
 background:#fbfdfc;font-size:14px;color:var(--ink);font-family:inherit;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{resize:vertical;min-height:88px}
.field input:focus,.field textarea:focus,.field select:focus{
 outline:none;border-color:var(--brand);background:#fff;
 box-shadow:0 0 0 3px rgba(23,121,95,.14);
}
.form-note{font-size:12px;color:var(--muted);line-height:1.7;margin-top:10px}
.form-card .btn{width:100%;margin-top:4px}

/* ============ footer ============ */
.site-footer{
 background:#0b1f21;color:#b9cec8;border-top:3px solid var(--brand-700);
 padding:48px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px;padding-bottom:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand strong{color:#f0fbf7;font-size:16px}
.footer-col p{font-size:13.5px;line-height:1.84;color:#9db8b1;max-width:420px}
.footer-col h4{font-size:13.5px;letter-spacing:1.2px;color:#f0fbf7;margin-bottom:14px;font-weight:700}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:13.5px;color:#a8c3bc;transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:#7fe0c0;transform:translateX(2px)}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
 padding:16px 0 22px;border-top:1px solid rgba(255,255,255,.09);
 font-size:12.5px;color:#829d96;
}

/* ============ responsive ============ */
@media (max-width:1024px){
 .rule-hero-grid{grid-template-columns:1fr;gap:24px}
 .metric-board{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
 .grid-3,.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
 .split{grid-template-columns:1fr;gap:24px}
 .cta-inner{grid-template-columns:1fr;padding:30px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
 .sec-head h2{font-size:23px}
 .rule-hero h1{font-size:31px}
}
@media (max-width:860px){
 .header-inner{flex-wrap:wrap;gap:12px;padding:10px 0}
 .nav-toggle{display:inline-flex}
 .brand{order:1}
 .header-cta{order:2;margin-left:auto}
 .nav{
  order:3;width:100%;flex-direction:column;align-items:stretch;gap:2px;
  max-height:0;overflow:hidden;margin-left:0;
  transition:max-height .3s ease,padding .3s ease;
 }
 .nav.is-open{max-height:520px;padding:8px 0 4px;overflow-y:auto}
 .nav-link{padding:11px 12px;font-size:15px;justify-content:space-between;min-height:44px}
 .nav-link.active::after{left:12px;right:12px;bottom:5px}
 .dropdown{
  position:static;opacity:1;visibility:visible;transform:none;
  box-shadow:none;border:0;border-left:2px solid var(--line);
  border-radius:0;margin:0 0 6px 14px;padding:0 0 0 8px;min-width:0;
 }
 .dropdown a{padding:8px 10px;font-size:13.5px}
 .hero-pills,.rule-pills{gap:8px}
}
@media (max-width:680px){
 .section{padding:42px 0}
 .section-tight{padding:34px 0}
 .grid-3,.grid-2,.news-grid,.steps,.compare{grid-template-columns:1fr}
 .metric-board{grid-template-columns:1fr 1fr;padding:18px}
 .metric strong{font-size:22px}
 .sec-head h2{font-size:21px}
 .rule-hero{padding:34px 0 40px}
 .rule-hero h1{font-size:25px}
 .ledger-head{display:none}
 .ledger-row{grid-template-columns:1fr;gap:4px;padding:14px 16px}
 .ledger-row .pts{font-size:14px}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
 .cta-inner{padding:22px}
 .icon-matrix{padding:14px;gap:10px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .brand-text strong{font-size:14.5px}
 .brand-text em{font-size:10px;letter-spacing:1px}
 .brand-mark{width:32px;height:32px;font-size:15px;border-radius:10px}
 .rule-hero h1{font-size:22px}
 .rule-lead{font-size:14px}
 .icon-matrix{grid-template-columns:1fr}
 .metric-board{grid-template-columns:1fr}
 .btn{width:100%}
 .header-cta .btn{width:auto}
 .sec-head{gap:10px}
}

/* roulang page: category3 */
:root{
 --brand:#17795f;
 --brand-600:#0f604a;
 --brand-700:#0b4b3a;
 --brand-100:#e5f4ee;
 --ink:#102328;
 --ink-2:#3d565e;
 --muted:#6d8790;
 --bg:#f5f8f6;
 --surface:#ffffff;
 --line:#e2ebe7;
 --accent:#b8862f;
 --accent-soft:#fbf3e1;
 --radius-lg:18px;
 --radius:14px;
 --radius-sm:9px;
 --shadow-xs:0 1px 2px rgba(16,35,40,.05);
 --shadow-sm:0 8px 22px -14px rgba(16,35,40,.35);
 --shadow-md:0 22px 48px -28px rgba(16,35,40,.5);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 font-size:16px;
 line-height:1.78;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:1.15em}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}
/* ============ header ============ */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:saturate(160%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 10px 28px -22px rgba(16,35,40,.6);background:rgba(255,255,255,.98)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 auto;
 display:grid;place-items:center;
 background:linear-gradient(150deg,var(--brand) 0%,var(--brand-700) 100%);
 color:#fff;font-weight:700;font-size:17px;letter-spacing:0;
 box-shadow:0 8px 18px -12px rgba(15,96,74,.85);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.4px}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
 position:relative;display:inline-flex;align-items:center;gap:5px;
 padding:9px 13px;border-radius:var(--radius-sm);
 font-size:14.5px;font-weight:500;color:var(--ink-2);
 transition:color .2s ease,background .2s ease;
 white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
 border-radius:2px;background:var(--brand);
}
.nav-item{position:relative}
.caret{
 width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
 border-top:5px solid currentColor;opacity:.55;display:inline-block;
}
.dropdown{
 position:absolute;top:calc(100% + 8px);left:0;min-width:198px;
 background:var(--surface);border:1px solid var(--line);border-radius:12px;
 box-shadow:var(--shadow-md);padding:8px;
 opacity:0;visibility:hidden;transform:translateY(6px);
 transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
 z-index:70;
}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown a{
 display:block;padding:8px 11px;border-radius:var(--radius-sm);
 font-size:13.5px;color:var(--ink-2);transition:background .18s ease,color .18s ease;
}
.dropdown a:hover{background:var(--brand-100);color:var(--brand-700)}
.header-cta{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);
 border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);
 align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:focus-visible,.btn:focus-visible,.nav-link:focus-visible,a:focus-visible,
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
 outline:2px solid var(--brand);outline-offset:2px;
}
/* ============ buttons ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:7px;
 padding:11px 20px;border-radius:10px;border:1px solid transparent;
 font-size:14.5px;font-weight:600;line-height:1.2;cursor:pointer;
 transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -16px rgba(15,96,74,.95)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 16px 26px -16px rgba(15,96,74,.9)}
.btn-primary:active{transform:translateY(0);background:var(--brand-700)}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:rgba(23,121,95,.35)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.14);color:#f2fbf7;border-color:rgba(255,255,255,.32)}
.btn-light:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}
/* ============ 分类页 Hero ============ */
.cat-hero{
 position:relative;overflow:hidden;
 padding:44px 0 58px;
 background:
   radial-gradient(1100px 420px at 88% -10%,rgba(23,121,95,.14),transparent 62%),
   linear-gradient(180deg,#f6faf8 0%,#eef5f1 100%);
 border-bottom:1px solid var(--line);
}
.cat-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--brand-600);font-weight:500}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span.sep{opacity:.5}
.cat-kicker{
 display:inline-flex;align-items:center;gap:8px;
 padding:5px 12px;border-radius:999px;
 background:var(--brand-100);border:1px solid #cfe7dd;
 font-size:12.5px;letter-spacing:1px;color:var(--brand-700);font-weight:600;
}
.cat-kicker i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block}
.cat-hero h1{
 margin:16px 0 16px;font-size:38px;line-height:1.3;font-weight:800;letter-spacing:.3px;color:var(--ink);
}
.cat-hero h1 span{color:var(--brand-600)}
.cat-lead{font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:620px}
.chip-row{display:flex;flex-wrap:wrap;gap:9px;margin:22px 0 26px}
.chip{
 display:inline-flex;align-items:center;gap:6px;
 padding:7px 14px;border-radius:999px;font-size:13px;font-weight:500;
 background:#fff;border:1px solid var(--line);color:var(--ink-2);
 box-shadow:var(--shadow-xs);transition:transform .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.chip:hover{transform:translateY(-2px);border-color:#bfe0d3;color:var(--brand-700);box-shadow:var(--shadow-sm)}
.chip svg{opacity:.7}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-figure{
 position:relative;border-radius:var(--radius-lg);overflow:hidden;
 border:1px solid #d9e8e1;box-shadow:var(--shadow-md);background:#0e2a29;
}
.hero-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-figure figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
 background:linear-gradient(180deg,rgba(8,30,28,0),rgba(8,30,28,.86));
 color:#eaf7f2;font-size:13px;letter-spacing:.3px;
}
.hero-mini{
 display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px;
}
.mini-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:13px 15px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#c9e2d8}
.mini-card strong{display:block;font-size:19px;color:var(--brand-700);font-weight:800;line-height:1.35}
.mini-card span{font-size:12.5px;color:var(--muted)}
/* ============ 板块 ============ */
.section{padding:66px 0}
.section-alt{background:linear-gradient(180deg,#eff5f1 0%,#f6faf8 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{
 display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
 margin-bottom:32px;flex-wrap:wrap;
}
.section-kicker{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:700;letter-spacing:1.6px;color:var(--brand-600);
 text-transform:uppercase;
}
.section-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.section-title{margin:10px 0 0;font-size:26px;line-height:1.4;font-weight:800;color:var(--ink);letter-spacing:.2px}
.section-desc{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2);max-width:640px}
.section-aside{font-size:13.5px;color:var(--muted);max-width:300px;line-height:1.75;border-left:2px solid #d6e7df;padding-left:14px}
/* ============ 指标看板 ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.metric-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px 20px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#c9e2d8}
.metric-label{font-size:13px;color:var(--muted);letter-spacing:.4px}
.metric-value{font-size:30px;font-weight:800;color:var(--brand-700);line-height:1.25;margin:6px 0 2px;letter-spacing:.5px}
.metric-value small{font-size:14px;font-weight:600;color:var(--ink-2);margin-left:3px}
.metric-note{font-size:12.5px;color:var(--muted);line-height:1.65}
.bar{height:6px;border-radius:999px;background:#e9f1ed;margin-top:14px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand) 0%,#3fb491 100%)}
/* ============ 维度矩阵 ============ */
.dim-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.dim-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-xs);display:flex;flex-direction:column;gap:12px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.dim-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#c9e2d8}
.dim-icon{
 width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
 background:var(--brand-100);color:var(--brand-700);border:1px solid #d5ebe2;
}
.dim-card h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5}
.dim-card p{font-size:14px;line-height:1.8;color:var(--ink-2)}
.tag{
 display:inline-flex;align-items:center;
 padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;
 background:var(--accent-soft);color:#8a6520;border:1px solid #f0e0be;
}
.tag-green{background:var(--brand-100);color:var(--brand-700);border-color:#cfe7dd}
.dim-card .tag{align-self:flex-start;margin-top:auto}
/* ============ 对比 ============ */
.compare-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:start}
.compare-board{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-sm);overflow:hidden;
}
.compare-head{
 display:grid;grid-template-columns:1.25fr 1fr 1fr;
 background:linear-gradient(150deg,var(--brand-700),var(--brand-600));
 color:#eaf7f2;font-size:13.5px;font-weight:700;letter-spacing:.6px;
}
.compare-head span{padding:14px 16px;border-right:1px solid rgba(255,255,255,.14)}
.compare-head span:last-child{border-right:none}
.compare-row{
 display:grid;grid-template-columns:1.25fr 1fr 1fr;
 border-top:1px solid var(--line);font-size:14px;color:var(--ink-2);
 transition:background .2s ease;
}
.compare-row:hover{background:#f4faf7}
.compare-row span{padding:14px 16px;border-right:1px solid var(--line);line-height:1.7}
.compare-row span:last-child{border-right:none}
.compare-row .item{font-weight:600;color:var(--ink)}
.compare-row .good{color:var(--brand-700);font-weight:600}
.compare-row .warn{color:#9a7322;font-weight:600}
.compare-copy p{font-size:14.5px;line-height:1.85;color:var(--ink-2);margin-bottom:14px}
.compare-list{list-style:none;padding:0;display:grid;gap:12px;margin-top:6px}
.compare-list li{
 display:flex;gap:11px;font-size:14px;line-height:1.75;color:var(--ink-2);
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
 padding:12px 14px;box-shadow:var(--shadow-xs);
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:0 0 auto;margin-top:8px}
/* ============ 里程碑 ============ */
.timeline{position:relative;display:grid;gap:16px;padding-left:26px}
.timeline::before{
 content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;border-radius:2px;
 background:linear-gradient(180deg,var(--brand) 0%,#cfe7dd 100%);
}
.tl-item{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:18px 20px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tl-item::before{
 content:"";position:absolute;left:-26px;top:22px;width:12px;height:12px;border-radius:50%;
 background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px #eaf5f0;
}
.tl-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#c9e2d8}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:6px}
.tl-ver{font-size:15.5px;font-weight:800;color:var(--brand-700)}
.tl-date{font-size:12.5px;color:var(--muted)}
.tl-item p{font-size:14px;line-height:1.8;color:var(--ink-2)}
/* ============ 资讯列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{
 display:flex;flex-direction:column;gap:10px;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#c9e2d8}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--muted)}
.news-card h3{font-size:16.5px;font-weight:700;line-height:1.55;color:var(--ink)}
.news-card p{font-size:13.8px;line-height:1.78;color:var(--ink-2)}
.news-more{margin-top:8px;font-size:13px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.news-card:hover .news-more{color:var(--brand-700)}
.news-empty{
 grid-column:1/-1;padding:26px;border:1px dashed #cfe0d8;border-radius:var(--radius);
 background:#fff;color:var(--muted);font-size:14px;text-align:center;
}
/* ============ 核对标准 ============ */
.assure-wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:38px;align-items:center}
.assure-figure{border-radius:var(--radius-lg);overflow:hidden;border:1px solid #d9e8e1;box-shadow:var(--shadow-sm)}
.assure-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.assure-list{display:grid;gap:14px;margin-top:22px}
.assure-item{
 display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:16px 18px;box-shadow:var(--shadow-xs);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.assure-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#c9e2d8}
.assure-num{
 flex:0 0 auto;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
 background:var(--brand-100);color:var(--brand-700);font-size:13.5px;font-weight:800;border:1px solid #d5ebe2;
}
.assure-item h4{font-size:15.5px;font-weight:700;margin-bottom:4px}
.assure-item p{font-size:13.8px;line-height:1.78;color:var(--ink-2)}
/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:880px;margin:0 auto}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-xs);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#bfe0d3;box-shadow:var(--shadow-sm)}
.faq-item summary{
 cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px;
 padding:17px 20px;font-size:15.5px;font-weight:700;color:var(--ink);
 transition:background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#f4faf7}
.faq-item summary .arrow{
 margin-left:auto;flex:0 0 auto;width:18px;height:18px;color:var(--brand-600);
 transition:transform .22s ease;
}
.faq-item[open] summary .arrow{transform:rotate(180deg)}
.faq-body{padding:0 20px 18px 20px;font-size:14px;line-height:1.85;color:var(--ink-2)}
/* ============ 反馈表单 ============ */
.form-wrap{
 display:grid;grid-template-columns:.92fr 1.08fr;gap:34px;align-items:start;
}
.form-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-md);padding:28px 26px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
.field input,.field select,.field textarea{
 width:100%;padding:11px 13px;border-radius:var(--radius-sm);
 border:1px solid #d8e5df;background:#fbfdfc;color:var(--ink);
 font-size:14px;line-height:1.6;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{
 border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(23,121,95,.12);outline:none;
}
.field textarea{min-height:118px;resize:vertical}
.form-hint{font-size:12.5px;color:var(--muted);line-height:1.7}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:4px}
.form-msg{
 grid-column:1/-1;display:none;padding:11px 14px;border-radius:var(--radius-sm);
 background:var(--brand-100);border:1px solid #cfe7dd;color:var(--brand-700);
 font-size:13.5px;font-weight:600;
}
.form-msg.show{display:block}
.form-side{
 position:relative;overflow:hidden;border-radius:var(--radius-lg);
 padding:30px 28px;color:#eaf7f2;
 background:linear-gradient(150deg,rgba(9,44,40,.94),rgba(12,66,55,.9)),url('/assets/images/backpic/back-4.webp') center/cover no-repeat;
 box-shadow:var(--shadow-md);
}
.form-side h2{font-size:24px;line-height:1.45;font-weight:800;color:#fff;margin:12px 0 12px}
.form-side p{font-size:14.5px;line-height:1.85;color:#c9e3db}
.side-facts{display:grid;gap:10px;margin-top:20px}
.side-facts div{
 display:flex;align-items:center;gap:10px;font-size:13.5px;color:#d8efe7;
 padding:10px 13px;border-radius:var(--radius-sm);
 background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
}
.side-facts svg{flex:0 0 auto;color:#8ee6c6}
/* ============ footer ============ */
.site-footer{background:#0c2422;color:#c3d8d3;padding:52px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff}
.footer-brand strong{font-size:16px;font-weight:700;letter-spacing:.3px}
.footer-col p{font-size:13.8px;line-height:1.85;color:#a9c3bd;max-width:380px}
.footer-col h4{font-size:14px;font-weight:700;color:#eaf7f2;margin:4px 0 14px;letter-spacing:.6px}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:13.8px;color:#a9c3bd;transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-links a:hover{color:#8ee6c6;transform:translateX(2px)}
.footer-bottom{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
 border-top:1px solid rgba(255,255,255,.1);padding:18px 0 22px;
 font-size:12.8px;color:#8fada6;
}
/* ============ 响应式 ============ */
@media (max-width:1024px){
 .cat-hero-grid{grid-template-columns:1fr;gap:30px}
 .cat-hero h1{font-size:32px}
 .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .dim-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .compare-wrap{grid-template-columns:1fr;gap:24px}
 .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .assure-wrap{grid-template-columns:1fr;gap:26px}
 .form-wrap{grid-template-columns:1fr;gap:24px}
 .nav{gap:0}
 .nav-link{padding:9px 10px;font-size:13.5px}
 .header-inner{gap:12px}
}
@media (max-width:980px){
 .nav{
  position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:2px;
  background:#fff;border-bottom:1px solid var(--line);
  padding:10px 16px 16px;box-shadow:var(--shadow-md);
  display:none;max-height:calc(100vh - 64px);overflow:auto;
 }
 .nav.is-open{display:flex}
 .nav-toggle{display:flex}
 .header-cta{margin-left:auto}
 .nav-item .dropdown{
  position:static;opacity:1;visibility:visible;transform:none;
  box-shadow:none;border:none;background:transparent;padding:0 0 6px 12px;
  display:none;min-width:0;
 }
 .nav-item.open .dropdown{display:block}
 .nav-item:hover .dropdown{display:none}
 .nav-item.open:hover .dropdown{display:block}
 .nav-link.active::after{display:none}
 .nav-link{padding:12px 12px;font-size:15px;border-radius:10px}
}
@media (max-width:768px){
 .section{padding:48px 0}
 .cat-hero{padding:32px 0 44px}
 .cat-hero h1{font-size:27px;line-height:1.35}
 .hero-mini{grid-template-columns:repeat(2,minmax(0,1fr))}
 .section-title{font-size:22px}
 .compare-head,.compare-row{grid-template-columns:1.1fr .9fr .9fr;font-size:13px}
 .compare-head span,.compare-row span{padding:11px 12px}
 .news-grid{grid-template-columns:1fr}
 .form-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .brand-text em{display:none}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .cat-hero h1{font-size:24px}
 .cat-lead{font-size:14.5px}
 .metric-grid{grid-template-columns:1fr}
 .dim-grid{grid-template-columns:1fr}
 .hero-mini{grid-template-columns:1fr 1fr}
 .btn{width:100%}
 .cat-hero-actions .btn{width:100%}
 .form-actions .btn{width:100%}
 .compare-head,.compare-row{grid-template-columns:1fr .8fr .8fr;font-size:12.4px}
 .compare-head span,.compare-row span{padding:10px 9px}
 .faq-item summary{font-size:14.5px;padding:15px 16px}
 .tl-item::before{left:-24px}
 .timeline{padding-left:22px}
}